Power
There are numerous types of forklifts that are powered by propane gas. Forklifts which utilize propane are easy to refill. The gas is stored inside a pressurized tank on the rear of the truck. The propane is pushed into the engine, where it is converted into vapor and then the vapor mixes with air. The throttle of the forklift is used to be able to control the vapor flow. A spark plug ignites the vapor and air mixture producing pressure which moves the pistons. The pistons turn the wheels and run the hydraulic pump.

Forklifts that utilize propane are suggested for use within other buildings and warehouses because they are clean burning with low emissions.

Hydraulics
The forklift's hydraulic system is what enables it to lift and transport very heavy stuff from location to location. Tubes, cylinders and a pump make up the hydraulic system. The pump forces dense fluid in the tubing and into the cylinders. The pressure build up pushes a piston, which lifts the forks. When the forks are lowered by the operator, the hydraulic fluid flows out of the cylinders and back in the pump.

Steering
Where maneuverability is required, propane forklifts are the most suitable. Unlike a car, a forklift uses its back wheels to turn, which enables the forklift to pivot fast on a tight radius.